Mahogany Road over Branch of Silver Creek
FairPottawattamie County, Iowa · 076401603 · Structure no. 000000000287990
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 103 ft
- 3 main spans
- Daily traffic
- 349
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Mahogany Road over Branch of Silver Creek is a concrete continuous slab carrying Mahogany Road over Branch of Silver Creek in Pottawattamie County, Iowa. It was built in 1961, so it is 64 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 349 vehicles a day, roughly 17% of them trucks, projected to reach 349 by 2043. The structure is 103 ft (31.4 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mahogany Road over Branch of Silver Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is Mahogany Road over Branch of Silver Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does Mahogany Road over Branch of Silver Creek carry?
About 349 vehicles per day (2021 count), of which roughly 17% are trucks.
How long is Mahogany Road over Branch of Silver Creek?
The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.
Who owns Mahogany Road over Branch of Silver Creek?
It is owned by the County Highway Agency.